package com.atguigu.lease.web.app.service.impl;


import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.common.utils.VerifyCodeUtil;
import com.atguigu.lease.model.entity.UserInfo;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.app.mapper.UserInfoMapper;
import com.atguigu.lease.web.app.service.LoginService;
import com.atguigu.lease.web.app.service.SmsService;
import com.atguigu.lease.web.app.vo.user.LoginVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.Random;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {
  @Autowired
    StringRedisTemplate redisTemplate;
     @Autowired
    SmsService smsService;
     @Autowired
    UserInfoMapper userInfoMapper;

    @Override
    public void getCode(String phone) {
        if(!StringUtils.hasText(phone)){
              throw  new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);
        }

        //验证码的key
        //app:login:155xxxxx
        String key= RedisConstant.APP_LOGIN_PREFIX+phone;


        //一个手机号  :  1分钟(60s)内只能发送一次短信

        Boolean result = redisTemplate.hasKey(key);
         if(result){
             //剩余多长时间过期
             Long expireTime = redisTemplate.getExpire(key);
             //验证码的实际有效期
             Integer totalTime = RedisConstant.APP_LOGIN_CODE_TTL_SEC;
             if((totalTime-expireTime)<RedisConstant.APP_LOGIN_CODE_RESEND_TIME_SEC){
                 throw  new LeaseException(ResultCodeEnum.APP_SEND_SMS_TOO_OFTEN);
             }
         }
        //生成验证码
        String code = VerifyCodeUtil.generateCode(6);
        //发送验证码
        smsService.sendMsg(phone,code);
        //redis保存验证码

        redisTemplate.opsForValue().set(key,code,RedisConstant.APP_LOGIN_CODE_TTL_SEC, TimeUnit.SECONDS);
    }

    @Override
    public String login(LoginVo loginVo) {
        String phone = loginVo.getPhone();
        String code = loginVo.getCode();
        if(!StringUtils.hasText(phone)){
             throw  new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);
        }

        if(!StringUtils.hasText(code)){
            throw  new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EMPTY);
        }

        String key=RedisConstant.APP_LOGIN_PREFIX+phone;
        String redisCode = redisTemplate.opsForValue().get(key);

        if(redisCode==null){
             throw  new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EXPIRED);
        }

        if(!redisCode.equals(code)){
             throw  new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_ERROR);
        }





        //确定mysql数据:   用户是否存在
         /*
         *  如果存在 给前端响应token
         *  如果不存在 自动保存为会员 再响应token信息
         * */

        UserInfo userInfo = userInfoMapper.selectOne(new LambdaQueryWrapper<UserInfo>().eq(UserInfo::getPhone, phone));




        if(userInfo==null){
            //自动保存为会员
             userInfo=new UserInfo();
             userInfo.setPhone(phone);
             userInfo.setNickname("用户-"+phone.substring(7));
             userInfo.setStatus(BaseStatus.ENABLE);
             userInfoMapper.insert(userInfo);
        }else {
            if(userInfo.getStatus()==BaseStatus.DISABLE){
                throw  new LeaseException(ResultCodeEnum.APP_ACCOUNT_DISABLED_ERROR);
            }
        }


        //生成token
        String token = JwtUtil.createToken(userInfo.getId(), phone);


        return token;
    }


}
